The formula for Sample Standard Deviation:
The important change is "N-1" instead of "N" (which is called "Bessel's correction").
The symbols also change to reflect that we are working on a sample instead of the whole population:
•The mean is now x (for sample mean) instead of μ (the population mean),
•And the answer is s (for Sample Standard Deviation) instead of σ.
But that does not affect the calculations. Only N-1 instead of N changes the